Windmill



' (No Model.)

B. F. LESTER.

WINDMILL.

No. 312,134. Patented Feb. 10, 18,85.

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NlTE Tarts A E HQEQ WlNDMlLLf SPECIFICATION forming part of LettersPatent No. 312,134, dated February 10, 1885.

Application filed May 12, 1884.

To all whom it may concern:

Be it known that I, ELISHA. F. LESTER, of Ohittenango, in the county ofMadison, in the State of New York, have invented new and usefulImprovements in \Vindmills, of which the following. taken in connectionwith the accompanying drawings, is a full, clear, and exact description.

This invention consists in improved means for controlling the movementof the windwheel, as hereinafter more fully described, and specificallyset forth in the claim.

In the annexed drawings, Figure l is a front elevation of a windmillembodying my improvements, the wind-wheel being shown in dotted lines,to present more fully some of the salient features of the invention.Fig. 2 is a top plan view of the same. Fig. 3 is a longitudinaltransverse section on line a: m, Fig. 1.

Fig. 4 is a side View of the top portion of thetower, the turn-table,and parts connected therewith; and Fig. 5 is a transverse section online3 y, Fig. 1.

Similar letters of reference indicate spending parts.

A represents the usual tower on which the windmill is mounted.

B denotes the turn-table, which is seated on the bed-plate U and adaptedto rotate thereon. Said turn-table I provide with an additional lateralsupport by forming it with a downward extension, B", which is journaledat its lower end in a collar, F, sustained central and adjustable in thetower A by means of rods Z Z. extended radially from the collar throughcross-bars m, attached to the tower, as best seen in Fig. 5 of thedrawings, the outer ends of said rods being screw-threaded, and providedwith nuts at opposite sides of the cross-bars m, by means of which nutsthe collar F can be adjusted in its place to sustain the turn-tableextension 13 vertically and central in the tower.

From the turn-table B projects a rigid arm, B, on which is journaled theshaft g of the wind-wheel W, said shaft projecting at the rear of thearm B, and having secured to its protruding end a crank, 72, which inthis case is represented in the form of a wrist-pin on a wheel, 0, fixedto the shaft 9. From the turntable rises a standard, t, having on itsupper end a laterally-projecting arm, k, on which is (No model.)

fulcrumed a walki-ng-beam,D, one end of which is connected with atubular 'plunger,.p, which is'extended down through an eye in'the centerof the turn-table Bandis connected with the ordinary plunger, 1), by aswivel, s, which allows the mill to turn on its vertical axis withoutdisturbing the lower plunger, 1).

0 is a pitman connecting the crank it with the walking-beam D, whichlatter I provide with a series of eyes, r r, at various distances fromthe fulcrum of the \valking-bean1,for the attachment of the pitman. Byshifting said attachment on the walking-beam I vary the length of thestroke of the plungers p p as may be desired.

R represents the rudder or vane pivoted on the turn-table B, so as toswing at right angles to the plane of the wind-wheel \V. Said rudder isprovided at its aforesaid pivotal connection with a shoulder or stop, a,which, by its bearing on the turntablel1mits, the movement of the rudderin one direction, so as to prevent its passing a line at right angles tothe plane of the wind-wheel, as illustrated by full lines in Figs. 2 and3 of the drawings, which position may be termed its normal position, andit is yieldingly held thereby means of a spring-restrained lever, L,pivoted on a lateral projection on the standard 2', and connected withthe rudder or vane R bya rod, b. Asuitable spring, t,bearing onthelever, causes the same to hold the rudder in its normal position.

(1 represents a brake-lever fulcrumed on a bracket attached to thestandard t, and bearing with one of its ends on the periphery of thewheel 0, hereinbefore mentioned, and having a sheave, 12, connectedto-its opposite end. A rope or chain, c, is connected to the rudder B atthe side opposite that to which the rod 12 is connected. Said rope orchain passes around a sheave, a, sustained in front of that end of thebrake-lever d which bears on the brake-wheel c. From the sheave u therope or chain 6 passes around the sheave v on the lever d, and thenceover a sheave. w, hung on an arm, 2, which projects upward from the topof the standard i and sustains the aforesaid sheave over the end of thetubular plunger 1),

through which the rope or chain e is extended to the foot of the towerA. By pulling on the said rope or chain the rudder R is swung aroundtoward a position parallel with the plane of the wind-wheel, and by thepressure of the wind on the rudder the mill is turned so as to cause thewind-wheel to be presented edgewise toward the wind-current and thus'lose the efi'ect thereof. Simultaneously with the aforesaid action ofthe rudder the rope or chain 6 causes the brake-lever d to press on thewheel a, and by the friction thereof check the movement of thewind-wheel.

Having described my invention, what I claim as new is- In combinationwith the turn-table B, standard z, tubular plunger 12, wheel W, rudderR, and the spring-restrained lever L, arranged to hold therudderinitsnormal positi0n,asshown, the brake-wheel c, rigidly attachedto the axis of the wheel W, the brake-lever d, bearing with one end onthe brake-wheel, the sheave 1:, con- 20 nected to the opposite end ofthe brake-lever, the sheave w, hung above the plunger 7, the I sheave u,sustained in front of the lever d, and the rope or chain 0, connected tothe rudder and extended around the sheaves u, v, and w, and down throughthe plunger 19, all combined substantially in the manner specified andshown.

In testimony whereof I have hereunto signed my name and aifixed my seal,in the presence of two attesting Witnesses, at Syracuse, in the countyof Onondaga, in the State of New York, this 15th day of April, 1884.

ELISHA F. LESTER. [n s.]

Witnesses:

FREDERICK H. GIBBS, O. BENDIXON.

